10 Questions
What is the term for the time spanned from viral infection to viral transmission in the arthropod vector?
Extrinsic incubation period
What is the term for the minimal viral load needed to produce a successful viral infection in the vector?
Minimal infection threshold (MIT)
Where does the virus replicate before disseminating elsewhere through hemolymph and neurons to other organs?
Posterior midgut cells
What determines the intrinsic ability of an arthropod to transmit an arbovirus?
Vector competence
What is the term for the process by which the virus gets into the new susceptible vertebrate host through the arthropod's saliva?
Arbovirus transmission cycle
Where does the primary viral replication mainly occur in vertebrates infected by arboviruses?
Near the entry site (vascular endothelium or regional lymph nodes)
What is the term for the period between virus entry and the onset of symptoms in the infected vertebrate host?
Intrinsic incubation period
During which period can arthropod vectors get infected with arboviruses?
Secondary viremia period
What allows viruses to reach target organs in vertebrates infected by arboviruses?
Long-lasting viremia produced by second viral replication
Which cells are susceptible to infection by infecting viruses in vertebrates?
Macrophages, epithelial cells, fibroblasts
Test your knowledge about the transmission of arboviruses by hematophagous arthropods. Learn about the process of virus acquisition, replication, dissemination, and transmission through this quiz.
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